#define _CRT_SECURE_NO_WARNINGS 1
#include<stdio.h>



	int x = 5, y = 7;
	void swap()
	{
		int z;
		z = x;
		x = y;
		y = z;
	} 
	int main()
	{
		int x = 3, y = 8;
		swap();
		printf("%d,%d\n", x, y);
		return 0;
	}